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sensors Mode-S transponder

4AECD1

ICAO 24-bit transponder address · allocated to Sweden

Hex
4AECD1
Octal
22566321
Decimal
4,910,289
Country
SE
No current signal · last broadcast 1d ago
Flights observed
50
Distinct callsigns
6
Country
SE
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 4AECD1.

Country allocation

The ICAO 24-bit address 4AECD1 falls within the block assigned to Sweden (SE) by ICAO Annex 10, Volume III. Every aircraft registered in Sweden receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.

Callsign history 6 distinct

Callsign Airline Flights Last seen
SVF664 - 38 2026-07-16
SVF653 - 3 2026-07-14
SVF648 - 3 2026-07-03
SVF649 - 2 2026-06-29
SVF646 - 2 2026-06-29
SVF642 - 2 2026-07-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-16 SVF664 - Jul 16, 12:49 UTCJul 16, 13:20 UTC30m
2026-07-16 SVF664 - Jul 16, 11:34 UTCJul 16, 12:09 UTC35m
2026-07-16 SVF664 - Jul 16, 09:10 UTCJul 16, 09:45 UTC35m
2026-07-16 SVF664 - Jul 16, 07:50 UTCJul 16, 08:10 UTC20m
2026-07-15 SVF664 OSD → ARN Jul 15, 11:20 UTCJul 15, 13:15 UTC1h 55m
2026-07-15 SVF664 - Jul 15, 09:45 UTCJul 15, 10:25 UTC40m
2026-07-15 SVF664 - Jul 15, 08:05 UTCJul 15, 09:00 UTC55m
2026-07-14 SVF664 - Jul 14, 10:15 UTCJul 14, 10:45 UTC30m
2026-07-14 SVF653 - Jul 14, 08:20 UTCJul 14, 08:40 UTC20m
2026-07-13 SVF653 - Jul 13, 21:50 UTCJul 13, 23:55 UTC2h 5m
2026-07-13 SVF653 ARN → VIY Jul 13, 10:25 UTCJul 13, 12:40 UTC2h 15m
2026-07-08 SVF642 - Jul 8, 16:55 UTCJul 8, 20:00 UTC3h 5m
2026-07-06 SVF642 - Jul 6, 16:30 UTCJul 6, 19:20 UTC2h 50m
2026-07-03 SVF648 - Jul 3, 23:20 UTCJul 4, 01:25 UTC2h 5m
2026-07-03 SVF648 - Jul 3, 20:15 UTCJul 3, 22:05 UTC1h 50m
2026-07-03 SVF648 ARN → NCE Jul 3, 17:00 UTCJul 3, 19:35 UTC2h 35m
2026-07-01 SVF664 - Jul 1, 11:25 UTCJul 1, 11:55 UTC30m
2026-07-01 SVF664 - Jul 1, 08:15 UTCJul 1, 09:15 UTC1h 0m
2026-06-30 SVF664 - Jun 30, 13:00 UTCJun 30, 13:40 UTC40m
2026-06-30 SVF664 - Jun 30, 11:30 UTCJun 30, 12:05 UTC35m
2026-06-29 SVF649 - Jun 29, 16:35 UTCJun 29, 18:10 UTC1h 35m
2026-06-29 SVF649 - Jun 29, 13:49 UTCJun 29, 16:00 UTC2h 10m
2026-06-29 SVF646 GDN → ARN Jun 29, 12:05 UTCJun 29, 13:00 UTC55m
2026-06-29 SVF646 - Jun 29, 06:34 UTCJun 29, 07:34 UTC1h 0m
2026-06-11 SVF664 OSD → ARN Jun 11, 08:50 UTCJun 11, 09:35 UTC45m
2026-06-11 SVF664 - Jun 11, 06:25 UTCJun 11, 07:05 UTC40m
2026-06-10 SVF664 - Jun 10, 12:50 UTCJun 10, 13:40 UTC50m
2026-06-10 SVF664 - Jun 10, 11:20 UTCJun 10, 12:20 UTC1h 0m
2026-06-10 SVF664 - Jun 10, 07:40 UTCJun 10, 09:00 UTC1h 20m
2026-06-10 SVF664 - Jun 10, 06:00 UTCJun 10, 06:55 UTC55m
2026-06-09 SVF664 - Jun 9, 12:55 UTCJun 9, 13:20 UTC25m
2026-06-09 SVF664 - Jun 9, 11:15 UTCJun 9, 11:50 UTC35m
2026-06-09 SVF664 - Jun 9, 08:35 UTCJun 9, 09:15 UTC40m
2026-06-09 SVF664 - Jun 9, 06:30 UTCJun 9, 07:05 UTC35m
2026-06-08 SVF664 - Jun 8, 07:40 UTCJun 8, 08:50 UTC1h 10m
2026-06-08 SVF664 - Jun 8, 06:30 UTCJun 8, 07:25 UTC55m
2026-06-05 SVF664 - Jun 5, 07:30 UTCJun 5, 08:30 UTC1h 0m
2026-06-05 SVF664 - Jun 5, 06:10 UTCJun 5, 07:00 UTC50m
2026-06-04 SVF664 - Jun 4, 12:55 UTCJun 4, 14:05 UTC1h 10m
2026-06-04 SVF664 - Jun 4, 11:10 UTCJun 4, 11:40 UTC30m
2026-06-04 SVF664 - Jun 4, 07:20 UTCJun 4, 09:00 UTC1h 40m
2026-06-04 SVF664 - Jun 4, 06:05 UTCJun 4, 06:50 UTC45m
2026-06-03 SVF664 - Jun 3, 12:30 UTCJun 3, 13:55 UTC1h 25m
2026-06-03 SVF664 - Jun 3, 11:20 UTCJun 3, 12:00 UTC40m
2026-06-03 SVF664 - Jun 3, 07:35 UTCJun 3, 08:50 UTC1h 15m
2026-06-03 SVF664 - Jun 3, 06:20 UTCJun 3, 06:45 UTC25m
2026-06-02 SVF664 ARN → ARN Jun 2, 11:10 UTCJun 2, 13:55 UTC2h 45m
2026-06-02 SVF664 ARN → ARN Jun 2, 06:15 UTCJun 2, 08:50 UTC2h 35m
2026-06-01 SVF664 - Jun 1, 12:05 UTCJun 1, 12:35 UTC30m
2026-05-29 SVF664 - May 29, 09:00 UTCMay 29, 09:25 UTC25m

About Mode-S

A Mode-S transponder code (also called an "ICAO 24-bit address" or "hex code") is a 6-character hexadecimal identifier permanently assigned to an aircraft when it's first registered. Unlike callsigns (which change with each flight) or registrations (which can change if an aircraft is sold internationally), the Mode-S address stays with the airframe for the life of the aircraft in that country.

Every ADS-B transmission from an aircraft includes its Mode-S address, making it the most reliable way to identify a specific airframe. Flight-tracking services like Apparatus use the Mode-S address as the primary key for tying position broadcasts, callsigns, and ownership records together.

Mode-S 4AECD1 frequently asked

What is Mode-S code 4AECD1?
4AECD1 is an ICAO 24-bit transponder address. Allocated to Sweden.
Where is Mode-S 4AECD1 registered?
Mode-S code 4AECD1 is allocated to Sweden (SE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4AECD1 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4AECD1, octal 22566321, decimal 4,910,289.
What flights does 4AECD1 operate?
Mode-S 4AECD1 has broadcast 6 distinct callsigns, including SVF664, SVF653, SVF648, SVF649, SVF646.